Camels are large animals living in dry areas. There are two species of camels; the Arabian camel with a single hump(驼背) from the dry desert areas of West Asia, and the Bactrian camel with two humps from Central and East Asia. Camels are over 7 feet tall and weigh over 1,600 pounds. They will live up to 40 to 50 years. Most camels are domesticated(驯化) and fed by people. Camels are plant-eaters．

    Camels are very strong animals with wide, padded feet. They have thick leathery pads on their knees and chest. Camels have nostrils(鼻孔)that can open and close, protecting them from the desert environment. Bushy eyebrows and two rows of long eyelashes protect their eyes from sand. Their mouth is extremely tough, allowing camels to eat thorny(带刺的)desert plants. Their widened feet help them move without sinking into the sand. Their thick coats reflect sunlight, and also protect them from the intense heat from desert sand. Their long legs help by keeping them further from the hot ground．

    Camels can go without food and water for 3 to 4 days. They do not store water in their humps as is commonly believed．The humps are actually a container of fat. Camels are incredibly well-adapted to their environment. When conditions heat up, camels can increase their own body temperature, which prevents sweating and therefore water loss. They may not sweat at all during the day．

    Camels are sometimes called“ships of the desert”because people ride them around the hot, dry deserts of the world．However, the number of camels is becoming smaller for various reasons．

    Next time a customer comes to your office, offer him a cup of coffee. And when you're doing your holiday shopping online, make sure you're holding a large glass of iced tea. The physical sensation (感觉) of warmth encourages emotional (情感的) warmth, while a cold drink in hand prevents you from making unwise decisions—those are the practical lesson being drawn from recent research by psychologist (心理学家) John A. Bargh.

    Psychologists have known that one person's perception (感知) of another's “warmth” is a powerful determiner in social relationships. Judging someone to be either “warm” or “cold” is a primary consideration, even trumping evidence that a “cold” person may be more capable (能干的). Much of this is rooted in very early childhood experiences, Bargh argues, when babies' sense of the world around them is shaped by physical sensations, particularly warmth and coldness.

    Feelings of “warmth” and “coldness” in social judgments appear to be universal. Although no worldwide study has been done, Bargh says that describing people as “warm” or “cold” is common to many cultures, and studies have found those perceptions influence judgment in dozens of countries.

    To test the relationship between physical and psychological warmth, Bargh conducted an experiment which involved 41 college students. A research assistant who was unaware of the study's hypotheses (假设), handed the students either a hot cup of coffee, or a cold drink, to hold while the researcher filled out a short information form: The drink was then handed back. After that, the students were asked to rate the personality of “Person A” based on a particular description. Those who had briefly held the warm drink regarded Person A as warmer than those who had held the iced drink.

    “We are grounded in our physical experiences even when we think abstractly (抽象的),” says Bargh.

    A new “smart bin” could spell the end of environment - conscious families spending hours sorting tins, cartons, bottles, and cardboard for recycling. The invention, which automatically sorts rubbish into recycling categories, is being trialed in Poland and is set to go on sale in the UK within a few years.

    The bin, designed by start - up company Bin. E, recognizes different types of waste via a system positioned inside the bin which uses sensors, image recognition and artificial intelligence. Once waste is placed inside, the camera and sensors identify its type and place it in one of the smaller bins. Then it compresses (压缩) the waste so it occupies less space.

    News of the launch showed that more than a million households are being forced to accept bin collections every three or four weeks, because councils are trying to force them to recycle more. Data collected by The Telegraph has showed at least 18 areas have moved or will shortly be moving to three - weekly rubbish collections, while a further three have adopted or are trialing four - weekly collections. While reducing general bin collections, councils are increasing the frequency of recycling collections in a bid to change people's behaviour. It is thought that the bin could be stocked by department stores such as John Lewis, which said it is introducing new hi - tech recycling bins to satisfy increasing customer appetite for them. Matt Thomas, a utility (家用设施) seller at John Lewis, said, “We've recently seen a jump in specialist bins sales, with a 25 percent increase in the last few months alone. We have noticed our customers are becoming more and more sustainability focused, choosing dual compartment (双格) recycling bins that make it far easier to recycle different types of waste. In response to this demand, we are really excited to introduce a new voice and sensor activated smart bin this autumn / winter season — designed to use new technology to make recycling more efficient and functional for the everyday home.”

Hollywood's theory that machines with evil(邪恶) minds will drive armies of killer robots is just silly. The real problem relates to the possibility that artificial intelligence(AI) may become extremely good at achieving something other than what we really want. In 1960 a well-known mathematician Norbert Wiener, who founded the field of cybernetics（控制论）, put it this way: “If we use, to achieve our purposes, a mechanical agency with whose operation we cannot effectively interfere(干预), we had better be quite sure that the purpose put into the machine is the purpose which we really desire.”

A machine with a specific purpose has another quality, one that we usually associate with living things: a wish to preserve its own existence. For the machine, this quality is not in-born, nor is it something introduced by humans; it is a logical consequence of the simple fact that the machine cannot achieve its original purpose if it is dead. So if we send out a robot with the single instruction of fetching coffee, it will have a strong desire to secure success by disabling its own off switch or even killing anyone who might interfere with its task. If we are not careful, then, we could face a kind of global chess match against very determined, super intelligent machines whose objectives conflict with our own, with the real world as the chessboard.

The possibility of entering into and losing such a match should concentrate the minds of computer scientists. Some researchers argue that we can seal the machines inside a kind of firewall, using them to answer difficult questions but never allowing them to affect the real world. Unfortunately, that plan seems unlikely to work: we have yet to invent a firewall that is secure against ordinary humans, let alone super intelligent machines.

Solving the safety problem well enough to move forward in AI seems to be possible but not easy. There are probably decades in which to plan for the arrival of super intelligent machines. But the problem should not be dismissed out of hand, as it has been by some AI researchers. Some argue that humans and machines can coexist as long as they work in teams—yet that is not possible unless machines share the goals of humans. Others say we can just “switch them off” as if super intelligent machines are too stupid to think of that possibility. Still others think that super intelligent AI will never happen. On September 11, 1933, famous physicist Ernest Rutherford stated, with confidence, “Anyone who expects a source of power in the transformation of these atoms is talking moonshine.” However, on September 12, 1933, physicist Leo Szilard invented the neutron-induced(中子诱导) nuclear chain reaction.

    Hip-hop dancing(街舞) is popular with many young people today. They like it because they can invent their own moves. They use this dance to show their love for life. It also shows that they are not afraid of problems.

    Hip-hop dancing has a history of more than 20 years. It first began in the 1980s in the US. In early times, it was seen in New York and Los Angeles. At that time, many young black people often danced to the music in the streets. They used their legs, arms, heads and even shoulders to dance. Many young people still use most of these moves today.

    Hip-hop dancing became popular all over the world because of the 1983 movie Flash dance. Some people performed Hip-hop dancing in the movie. People enjoyed their performance. They began to dance like them. Then it became popular. There are two kinds of Hip-hop dancing: new school and old school. More and more young people are learning Hip-hop dancing. People believe that it is a good way to exercise their bodies, and that it is good for their health.

    Moving into a new home in a new neighborhood is an exciting experience. Of course, you want to make sure that you become an accepted and valuable part of your new neighborhood. The easiest w ay to achieve this is to make sure you behave yourself as a good neighbor should. {#blank#}1{#/blank#} Perhaps one of the most important things you can do as a good neighbor is to keep your property(房产)neat, clean, and in good repair.  {#blank#}2{#/blank#} By choosing to keep the outside of the home in great shape, you will help to improve the look and feel of the area.

    Second, take the overall appearance of the neighborhood seriously. When going for a walk, take along a small garbage bag. {#blank#}3{#/blank#} This small act will let your neighbors know that you care about the area.

    {#blank#}4{#/blank#} If a neighbor is going to be out of tow n, offer to collect mail and newspapers. If a neighbor suffers an illness, offer to do the grocery shopping. Let them know that you are there to help in any w ay that is acceptable, while still respecting the privacy of your neighbor.

    {#blank#}5{#/blank#} By follow in g the basic rules of respecting others, taking care of what belongs to you, and taking pride in the appearance of the neighborhood in general, you will quickly become a good neighbor that everyone appreciates.

A. In general, keep an eye on their property while they are gone.

B. A good neighbor is also one who likes to help out in small ways.

C. Being a good neighbor is more or less about considerate behavior.

D. Sometimes neighbors may go to the supermarket together to do shopping.

E. If you come across waste paper throw n out of a passing car, pick it up.

F. People tend to take pride in keeping everything in their street fresh and pleasing.

G. Here are a few tips to help you win over everyone in the neighborhood quickly.